Growth of juvenile shrimp Litopenaeus vannamei in waters fertilized with Ferti-Lake versus fertilizer experimental
DOI:
https://doi.org/10.5377/universitas.v6i2.13860Keywords:
Fertilizer, Intensive, PhytoplanktonAbstract
There is currently a worldwide trend towards greater consumption of fresh foods with a lower proportion of chemical adThe objective of this study was to evaluate the effect of fertilizing water with Ferti-Lake versus experimental fertilizer on the growth of early juvenile shrimp Litopenaeus vannamei for 35 days in 6 containers of 1.38 m2 with a planting density of 12 organisms / m2. As a result, mean temperatures of 32 ° C for Ferti-Lake and 32.5 ° C for the experimental were obtained. The pH with Ferti-Lake was 8.3 and 8 with the experimental, with a minimum of 6.8 for both treatments. Water salinity averaged 30.5% for both treatments. The visibility of the Secchi disk was between 21 cm and 86 cm with Ferti-Lake and between 25 cm and 83 cm in the experimental. The amount of phytoplankton was 165,000 cells / ml with Ferti-Lake and
187,500 cells / ml in the experimental, predominating Chlorophytes and Diatoms. The average Cumulative Growth in both conditions was 0.29 g to 5.7 g. The Ferti-Lake fertilization rate was 0.33 g and 1.50 g and 0.26 g and 1.20 g experimental, 91% and 100% survival (Ferti-Lake /experimental). The Growth Rate from 10.74 g to -13.36 g in both conditions. The productive yield was 1371.01lb / ha and 1506.61lb / ha (Ferti-Lake / experimental). In both experimental conditions an F.C.A of 1.1 was obtained, Ferti-Lake fertilizer is recommended since the costs to use the experimental fertilizer are higher.
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